baber/WOPTO huggingface dataset:
Patent GB-487746-A (GB)
Title: Improvements in and relating to electrical plug and socket devices
IPC: H01R13/625
Filed: 1937-11-05
Abstract: 487,746. Two-part couplings. CINCH MANUFACTURING CORPORATION. Nov. 5. 1937, No. 30367. Convention date, Nov. 20, 1936. [Class 38 (i)] The two parts of a plug-and-socket coupling have sheet-metal shields 1, 2 that are connected together by a sheet-metal ring 6 that also completes the continuity of the earthing connection through the shields 1, 2 and the screening of the coupling. Each of the shields 1, 2 has projections 4, 5 on its rim and the ring 6 has embossed therein a T-shaped recess 20 into which the projections 4, 5 enter so that on turning the ring the projections pass into the part 23 of the recess and are retained therein by shoulders 24. The contacts 11, 13 are mounted on insulating plates 8, 9, 15, 16 that are secured in the shields 1, 2 by lugs on the rim bent in to contact with the plates. Two of the pins may be larger than the others to ensure correct coupling and a guide disc 18 may be fixed within the circle of sockets.
Patent GB-208328-A (GB)
Title: Improvements in carpet sweepers
IPC: A47L11/33
Filed: 1922-11-07
Abstract: 208,328. Entwisle & Kenyon, Ltd., and Kenyon, W. H. Nov. 7, 1922. Brush-cleaners.-A cleaner C for removing hairs &c. from the rotary brush of a carpet-sweeper is formed with the blades c diagonally inclined to the longitudinal axis of the cleaner. The blades are preferably stamped out of a strip of steel and may all be inclined in the same direction. The cleaner is fixed to the brush casing by claws D of the type described in Specification 208,327, or by other means. Specification 26003/13, [Class 138 (i), Washing and cleaning buildings &c.], also is referred to.
Patent GB-1371827-A (GB)
Title: Two-layered sleeve for die-casting machines and process for manu facture therefor
IPC: B22D17/20
Filed: 1972-06-29
Abstract: 1371827 Shot ducts for die casting machines MITSUBISHI KINZOKU KOGYO KK 29 June 1972 [30 June 1971] 30419/72 Headings B3F and B3A [Also in Division C7]  A shot duct for a pressure die casting machine comprises an inner layer of molybdenum, tungsten or an alloy containing at least one of these metals as the principal constituent and an outer layer of a ferrous alloy, e.g. alloy steel, the two layers being solidly united with each other. The outer layer is formed by compacting a mixture of powders around a hollow cylinder of Mo or W and then sintering, the said hollow cylinder preferably having been formed in a separate sintering process. After machining to specified dimensions, a carbon steel sleeve may be fitted around the outer layer by a shrinking-on process.
Patent GB-1393346-A (GB)
Title: Suspension system for ceiling composed of multiple panel strips
IPC: E04B9/26
Filed: 1973-06-26
Abstract: 1393346 Suspended ceiling construction RONDO BUILDING SERVICES PTY LTD 26 June 1973 30425/73 Heading E1W Downwardly open elongate channel shaped runners 15 for suspension in a ceiling, supports a series of ceiling panel strips 19 by means of a plurality of discrete clips 20 locked in the channel by spring lugs 23. The clips retain the edge portions of the panel strips in generally L-shaped slots 21. The elongate gaps between the panel strips may be filled with infill strips 32 which may be provided with adjustable ventilation openings 36. Cornice strips (39) Fig 3 not shown may surround the ceiling and a sliding bracket on the end of the runners may support part of a panel strip at the edge of a ceiling which does not correspond to an integral number of panel strip widths, see Figs 3 and 5 (not shown)
Patent GB-745316-A (GB)
Title: Drawing compasses and like instruments
Inventor: SMITH ALFRED JESSE
IPC: B43L9/20
Filed: 1953-11-04
Abstract: 745,316. Hinges. MYERS & SON, Ltd., M. Oct. 4, 1954 [Nov. 4, 1953], No. 30448/53. Class 65 (2). [Also in Group XX] The pivotally-connected ends 3a of the legs 3 of a pair of compasses or the like are similar in form, each having a shallow circular recess 3c in its inner face; a compressible washer 5 is placed in the recesses, and the parts are held together by a pivot-pin 4. The pin 4 may be a rivet, as shown, with washers 6 under its heads, or it may be screwthreaded. The washer 5 is preferably of vulcanized fibre, but it may be of metal of a concave-convex or other form providing compressibility.
Patent GB-189972-A (GB)
Title: Improvements in variable speed gears for cigarette-making machines
IPC: A24C5/39
Filed: 1921-11-15
Abstract: 189,972. Koerner, E. Nov. 15, 1921. Expanding pulley gearing for cigarette-making machines comprises an auxiliary cam control for connecting and disconnecting. Pulleys 4, 6, Fig. 2, are mounted upon driving and driven shafts 2, 5. The movable flanges 4<a>, 6a are connected by arms 11, 12 to a sleeve formed as a nut on a screwed spindle 7 operated from a hand-wheel 10. The arm 12 is pivoted on the sleeve 13 and is normally held by the cam 14 so that the flanges 4<a>, 6<a> are operated in unison to change the speed. The cam 14 is secured to a collar 14<a> upon the sleeve 13, which is restrained from any but partial turning movements by spring pins 15, 15<a>, Fig. 6, which pass through an arc-shaped slot 16 in the sleeve and engage teeth 7b on the spindle 7. The pins 15, 15<a> have inclined ends 15b adapted upon engagement with the ends 16<a> of the slot to raise the pins singly from engagement with the spindle 7. When the spindle 7, Fig. 6, is turned clockwise, the pin 15 is raised and the spindle 7 turns without moving the cam 14, to change the speed. An opposite rotation carries the cam 14 with it, moving the flange 6<a> alone to disconnect.
Patent GB-800552-A (GB)
Title: Improvements in and relating to electrical modulator circuits
Inventor: ALLMARK REGINALD HUGH
IPC: H03K7/00
Filed: 1954-10-22
Abstract: 800,552. Pulse modulation circuits. ENGLISH ELECTRIC CO., Ltd. Oct. 21, 1955 [Oct. 22, 1954], No. 30465/54. Class 40 (5). A circuit for producing pulses having an amplitude proportional to one input and a duration proportional to a pulsed input, consists of a linear amplifier, the gain of which is reduced to zero by the modulating pulses. The signals to be modulated are applied from terminal 25 to the control grid of a gating pentode 18, and negative-going modulating pulses are applied from terminal 24 to the suppressor grid so as to intermittently cut the valve off. The output of valve 18 is passed via a cathode follower 28 and diode 32 to a load 33. The diode 32 conducts only when valve 18 conducts and there is feedback between the load 33 and input 25 to ensure linear amplification.
Patent GB-809381-A (GB)
Title: Improvements in or relating to the manufacture of electric capacitors
IPC: H01G13/02
Filed: 1956-10-05
Abstract: 809,381. Making electric condensers. GENERAL ELECTRIC CO. Ltd., and FARNSWORTH, J. Oct. 3, 1957 [Oct. 5, 1956], No. 30483/56. Class 83 (2). [Also in Group XXXVI] An electric capacitor is made by winding strips of metal foil interleaved with plastic strips, some or all of the strips being passed through an arrangement of insulating members during winding so as to wipe one or both surfaces of each strip. The Figure shows a dustproof enclosure 11 housing reels of metal strips 7, 8 and of plastic strips 9, 10. The strips are withdrawn from the box 11 passing between plastic rods 14 and over rollers before being wound on the mandrel 5 to form a capacitor 6. The rods 14, which may be of polystyrene have a diameter of about <SP>1</SP>/ 16  of an inch and are held by their ends in vertical slots 15. The metal foils may be of aluminium and the plastic strip, which should be slightly wider than the metal foil may be of polyethylene terephthalate and may be pre-stretched. At suitable intervals in the winding, lead out connections, which may be of copper wire, are spot-welded to the metal foil. A roller may be arranged to bear on the capacitor so as to exclude air bubbles and after winding leads are provided and the capacitor may be heat treated.
Patent GB-346725-A (GB)
Title: Improvements in wheels for motor and other road vehicles
IPC: B60B3/08
Filed: 1929-10-08
Abstract: 346,725. Disc wheels. MUNIER, J., 89, Rue Manin, Paris. Oct. 8, 1929, No. 30497. Convention date, Oct. 9, 1928. Void [Published under Sect. 91 of the Acts]. [Class 144 (i).] A wheel rim is formed in two parts, one or both parts being carried by a disc extending towards the wheel centre. In the form shown in Fig. 1, the rim-part 1 is carried by a disc 2 which is secured to the hub flange 4 by bolts 3. The other rim part 11 is formed integral with a disc 10 and detachably secured to the hub 6 by means of a hub-cap 8. In the modification shown in Fig. 5, the disc 26 carrying the main rim part is formed with a threaded boss 29 on which the disc 30 carrying the other rim-part is detachably secured by a nut 31. Apertures 34 are formed in the disc 30 to provide access to the nuts 33 on the attachment bolts 28, the apertures being covered by a cap-nut 32. Fig. 3 shows a further modification in which the rim parts 16, 18 are carried by mating discs 17, 19 which are detachably connected by bolts 23, the wheel being detachably secured to the hub 20 by a separate set of bolts 21.
Patent GB-225704-A (GB)
Title: Selective and anti-parasitic receiving systems for low frequency, constant period, damped or sustained electric currents and electro-magnetic waves
IPC: H03G11/00
Filed: 1923-12-04
Abstract: 225,704. Marrec, Ltd., and Marrec, Y. Dec. 4, 1923. Atmospherics and undesired signals, eliminating or limiting; thermionic amplifiers and detectors.-Following the usual detector and amplifying circuits A, the received signals are passed first through a group of practically aperiodic lowfrequency amplifying stages 1, 2, 3 and then through a group of resonant circuits 4, 5, 6 tuned to the required note frequency by means of coupling transformers H of the adjustable magnetic circuit type. The function of the group 1, 2, 3 is to greatly amplify the received signals (both desired and undesired) without introducing distortion. The second group 4, 5, 6 has practically no amplifying effect, but the resonance of the circuits results in limiting or cutting down the undesired frequencies in favour of the useful signals, which are then manifested as sustained and magnified local oscillations (autodyne) of the same frequency and duration as the selected signals.
Patent GB-764823-A (GB)
Title: Improvements in or relating to sound reproducing apparatus
IPC: H04R1/20
Filed: 1953-11-05
Abstract: 764,823. Loud-speakers. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. Nov. 5, 1953 [Nov. 5, 1952; Nov. 6, 1952], No. 30572/53. Class 40 (4). The convex side of a conical loud-speaker faces to the front to improve the high-frequency radiation. A conventional speaker with the casing behind the diaphragm reduced to narrow supporting arms may be mounted back-to-front on a baffle-board (Fig. 3, not shown) forming part of a cabinet or on a sound-impervious flange 5, Fig. 2. In Fig. 4, a reversed cone is supported by a shallow casing 18 and a centring spider 13. In Fig. 5, the centring spider is dispensed with, the moving coil 14 being in the same plane as the peripheral mounting 15. Specification 622,828 is referred to.
Patent GB-271345-A (GB)
Title: Improvements in steering-wheels
IPC: B62D1/06
Filed: 1926-12-03
Abstract: 271,345. Goemans, E. Dec. 3, 1926. Hand-wheels.-The hollow rim of a steering- wheel, formed of a, part. 1 carried by spokes 2 and a detachable part 3 secured thereto by lugs 4, contains electrical heating-elements, oomprising resistances 5, which are surrounded by heatconducting insulators, such as glass beads 6, and are coiled helically around a thermally and electrically insulating packing-core 7, holding the elements in contact with the rim. Any desired number of resistances can be put in circuit by a distributing-switch 8, carried beneath the wheel.
Patent GB-789984-A (GB)
Title: Improvements in or relating to magnesium base alloys
Inventor: WHITEHEAD DEREK JAMES
IPC: C22C23/00
Filed: 1954-10-25
Abstract: The corrosion resistance of Mg base alloys containing 0.2 to 10 per cent Zr, 0.25 to 6 per cent Th, (with or without Rare Earth metals not exceeding 5 per cent, the Th and Rare Earth metals together not exceeding 6 per cent), is increased by the addition to the molten alloy of such quantity of In as will produce 0.01 to 2.0 per cent in the finished alloy.  In addition to these specified metals the alloy may also contain Zn to 5 per cent, Mn to 0.5 per cent, Be to 0.002 per cent.  Ca to 0.2 per cent, Hg to 3 per cent, Pb to 1 per cent, Tl to 1 per cent, Li to 3 per cent, Te to 0.1 per cent, Ag to 1 per cent.  Specifications 511,137, 637,040, 733,221 and 759,411 are referred to.
Patent GB-395918-A (GB)
Title: Improvements in or relating to the filtration of gases
Filed: 1932-10-31
Abstract: 395,918. Filtering air. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. Oct. 31, 1932, No. 30675. Convention date, Nov. 3, 1931. [Class 8 (ii).] Air is rendered respirable by removal of aerosols in filters employing a loose mass of mingled fibres (other than the fine " vegetable wool " of reeds &c.) intimately mixed with inert powdered substance. Wool, cotton waste, hemp waste, wood pulp, rayon waste or asbestos may be employed mixed with talc, cork, ebonite dust ; or mixtures of fibres may be used with mixtures of powders. Specification 380,965 is referred to.
Patent GB-1148587-A (GB)
Title: Improvements relating to methods of manufacturing pole-pices for magnetic heads
IPC: G11B5/127
Filed: 1966-07-08
Abstract: 1,148,587. Magnetic heads. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 8 July, 1966 [13 July, 1965], No. 30772/66. Heading G5R. A polepiece for a magnetic head is made by polishing a body of sintered oxidic nickel zinc ferrite to form a gap bounding surface for the head, coating the polished surface with a thin layer of glass or vitreous enamel and grinding the body to define a boundary edge of the gap bounding surface. The glass or enamel is matched in respect of machineability and coefficient of expansion with the ferrite. To form a head, two such polepieces may have their glass parts fused together with the ferrite sections at the required separation, and the front face is then ground to provide the correct gap depth.
Patent GB-894579-A (GB)
Title: Improvements in coin gauging and selecting mechanism, such as used in coin-freed apparatus
Inventor: ROUNSIVELL WILFRED ARTHUR
Filed: 1957-10-02
Abstract: 894,579. Testing coins in coin-freed apparatus. FISHER & LUDLOW Ltd. Sept. 8, 1958 [Oct. 2, 1957], No. 30807/57. Class 27. Coin - testing mechanism for coin - freed apparatus comprises a base-plate 1, a pivoted spring-loaded clearing wall 5, a diametergauging passageway formed between the edges 15, 16 of spacer plates 13, 14, a magnet 19 on the clearing wall and a non-magnetic shield 22 spaced from the base-plate to form a coin passageway and an anvil 24 from which a correct coin will rebound to a desired location or from which an incorrect coin will fall to a reject shoot 23. A shoulder 18 is provided on the plate 14 to absorb the first impact of the inserted coin. In order that coins trapped in the passageway 15, 16 or by the magnet may be released to fall to the reject shoot 23, the clearing wall can be pivoted away from the base-plate either automatically after a time delay or by pressing an exterior button 8 and causing a roller 11 on a rod 7 to engage a cam surface 9 on the plate 14. The wall can also be pivoted to a greater degree by a direct pull, to afford access for maintenance. Specifications 894,580 and 894,581 are referred to.
Patent GB-981473-A (GB)
Title: Process for the dewaxing of a wax-containing hydrocarbon oil
IPC: C10G73/04
Filed: 1963-08-02
Abstract: Hydrocarbon oils are dewaxed by precipitating the wax in the presence of a polystearyl methacrylate, followed by separation. Preferably the polystearyl methacrylate has a molecular weight between 500 and 1,000,000.  The oil may be a lubricating oil such as a residual oil or a waxy raffinate, and preferably contains normal paraffins having at least 16 carbon atoms.  The precipitation of the wax may be effected by cooling in the presence of a dewaxing solvent, in which case the polystearyl methacrylate may be added prior to the solvent, or an essentially homogeneous mixture of the oil, polystearyl methacrylate, and dewaxing solvent if used, may be formed.
Patent GB-925454-A (GB)
Title: Improvements in or relating to telephone receivers
Inventor: ENESCOTT JOHN
IPC: H04R13/02
Filed: 1960-09-08
Abstract: 925,454. Telephone receivers. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Aug. 29, 1961 [Sept. 8, 1960], No. 30955/60. Class 40 (4). A telephone receiver comprises a moulded housing 10, Fig. 2, arranged to present seatings 14 and 11 on its front face to locate respectively a diaphragm 13 and a front cover 12, and a walled enclosure 17, Fig. 1, on its rear face which receives and locates a magnet assembly comprising a permanent magnet 25, and polepieces 15 and 16 surrounded by coils 30 and 31. The magnet assembly is attached to bosses 21 and 22 of the housing by brackets 28 and 29, the assembly is protected by a moulded cover 36 carrying terminals 37 and 38 which is located on a peripheral lip on the housing and is attached to it by spinning the edge of the front cover over the edge of the rear cover.
Patent GB-988947-A (GB)
Title: Bi-stable circuits
IPC: H03K19/162
Filed: 1961-08-28
Abstract: 988,947. Phase-shifting. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 28, 1961 [Nov. 30, 1960], No. 30958/61. Heading H1W. [Also in Divisions H3 and H4] A bi-stable circuit comprises a pair of transmission lines 50, 52 between an oscillator 10 and a circuit 26 rectifying the combined vector sum of the outputs and applying this to a phaseshifter in one of the lines phase-shifting between two limits differing by 180 degrees the line output so that the D.C. output is by positive feedback altered to one of two different stable voltages corresponding to each of the phase shifts differing by 180 degrees or 0 degrees. Pulses applied at 24 to the phase shifter can therefore switch the phase shift and D.C. output between their two values and reverse the output phase from line 50. The transmission lines may be strip lines, waveguides or coaxial, and terminate in a re-entrant cavity transformer 26 with the rectifier 32 inside. The phase shifter 20 may comprise saturable ferroelectric dielectric slabs, at temperatures just above the Curie temperature, mounted between a section of the strip insulated by mica inserts 60, 62 and ground plates 40, 42 enclosing the strip conductor, the D.C. voltage field in the dielectric altering the propagation velocity and therefore phase shift between two extreme values 180 degrees and 360 degrees (0 degrees) as the D.C. varies (Fig. 3) from zero to above a certain value. Alternatively, the phase shifter may be liquid or gaseous dielectric, or a ferrite gyrator or bi-refringent device magmetically controlled, or a variable capacity diode. In a modification the diode 32 is connected to the common end 27 of the lines, and the latter tuned by an adjustable plunger; also a D.C. amplifier amplifies the phase shifter control voltage. Further, instead of applying pulses to the phase shifter to alter the bi-stable state, strip lines adjacent the output of the phase shifter may inject additional carrier voltage on to the line 50 of opposite phase, and other adjacent strip lines may form outputs from line 50. The input lines may form logical AND, OR or majority circuits. To this end a series of such bi-stable circuits may be connected with their input terminal 24 connected in series by resistors and the oscillators 10 pulsed in sequence to produce trains of oscillations having a duration of just over 120 degrees of a cycle of operation, and D.C. voltages at 24 applied during the oscillation. This is transferred to the next bi-stable circuit and, added alongside the bi-stable voltage produced there in response to further input voltage, and so on. Specifications 778,883 and 793,799 are referred to.
Patent GB-956281-A (GB)
Title: Improvements in and relating to forming articles from plastic material
Inventor: BALKIN MARK
IPC: B26D1/00
Filed: 1960-09-08
Abstract: 956,281. Moulding rubber O-rings. GEORGE ANGUS & CO. Ltd. Sept. 8, 1960, No. 30980/60. Heading B5A. In a method of forming articles, e.g. 0-rings, from rubber or like plastic material, in which a blanking and moulding die having cutting edges defining a moulding cavity is closed against the material so that the material cut out is enclosed in the moulding cavity, the material is arranged across the die, before closure thereof, so that the moulding cavity is not completely faced by the material and at least a part of one cutting edge can serve as an air vent as the die closes, the material being of sufficient thickness for the amount cut out by the die to spread and fill the moulding cavity when the die is closed. In Fig. 1 strips 1, 2 of the material are presented to the die defined by 3 and 4 so as to leave an air venting space 5. In Fig. 4, the material is first stamped with holes 6 and then is arranged across the die 3, 4 as indicated.
Patent GB-1047023-A (GB)
Title: Vibration damper assembly
IPC: F16F15/123
Filed: 1963-08-06
Abstract: 1,047,023. Torsional vibration dampers; resilient drives. BORG-WARNER CORPORATION. Aug. 6, 1963 [Aug. 17, 1962], No. 31005/63. Headings F2S and F2U. A torsional vibration damper comprises a hub 1 with a radial flange 7 which extends between a pair of annular drive plates 10, 10 bolted to a spacer ring 12 and floating retainer plates 14, 14 which are located between the flange 7 and the drive plates 10, the flange 7, the retainer plates 14, and the drive plates 10 being provided with groups of apertures A, B and C the sets in each of which consist of a series of more or less registered apertures in the respective plates and each set within the same group having substantially identical dimensions. As shown group A comprises two sets of apertures diametrically opposed each set consisting of an elongated aperture 20 in each drive plate 10 and an aperture 22 in the flange 7 which is of equal arcuate length to a pair of circumferentially - spaced spring - retaining apertures 24, 26 in each of the floating plates 14, spring assemblies 28, 30 with spring seats 32 engaging respectively in the apertures 24, 26. The group C is located in a circle at the same radius as the group A the group B being arranged inwardly on a smaller concentric circle and the arrangement of the sets of apertures in groups B, C are identical to the sets in group A but for the fact that they incorporate a single spring assembly in a single aperture in each of the retainer plates 14. The extra length of the apertures 20 of group A in the drive plates 10 permit 8 degrees of angular movement relative to the flange 7 before any of the spring assemblies are engaged, the springs of groups B, C transmitting a load to the flange 7 only after the spring combinations 28, 30 of group A have accumulated 3 degrees and 8 degrees of angular movement respectively. The springs of groups A, B and C respectively yield totals of 11 degrees, 8 degrees and 3 degrees in one direction. Fig. 3 (not shown) illustrates a torque vs. deflection graph, the spring rates of the spring assemblies in groups A, B and C being progressively higher.